55% (1994)

52% (1990)

62% (1996)

50% (1997)

52% (1997)

50% (2001)

49% (2000)

37% (1998)

34% (1994)

46% (1994)

55% (1995)

60% (1994)

30% (1999)

48% (1999)

68% (1990)

59% (1995)

52% (1997)

44% (1998)

49% (1999)

56% (1989)